The discovery of human body remains on the rear tires of an airplane that flew from Beirut to Riyadh has put security at Lebanon's Rafik Hariri international airport in question. Sources told An Nahar daily in comments published Sunday that despite measures preventing anyone from reaching the tarmac, the man was able to approach the Saudi-owned Nas Air jet.

Such an incident could be used to commit terrorist acts, the sources added.

On its part, al-Hayat daily said that Lebanese security authorities at Rafik Hariri international airport received from their Saudi counterparts a photo of the body which indicates the man was in his 20s. Nas Air flight XY 720 took off from Beirut airport late Friday with 130 people on board and landed Saturday morning in the Saudi capital.

Lebanon's National News Agency said passengers on the plane reported seeing a man running towards the plane. "The passengers and flight attendants informed the pilot, but he did not take any action and continued takeoff without informing the Beirut control tower" that anything was amiss, according to the NNA.